blue and black. Soluble in water for red orange brown, soluble in ethanol in red. The strong sulfuric acid for blue-ray purple, diluted to blue. The dye solution to join strong hydrochloric acid as dark blue, precipitation; Add thick sodium hydroxide solution for the red color, have precipitation.
|
Standard
|
Acid Resistance
|
Alkali Resistance
|
Light Fastness
|
Soaping
|
Water
|
|
Fading
|
Stain
|
Fading
|
Stain
|
|
ISO
|
4
|
5
|
3
|
3
|
|
3-4
|
|
